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Re: HO72 in Texas 4.88 Gears
Quote:
Originally Posted by MrBeast
Using a Digital Tach to verify Engine RPM and a GPS my speed, with a 235/85R16 tire, running at 65 MPH with the 4.88 rear, .73 over drive on the NV4500, the truck turns about 2445 RPM, By the numbers a 235/85R16 is 31.73" tall, and will turn over 635.6165896 revolutions per mile, to travel at 65 mph this will require that the tire make 41315.07832 revolutions per hour. Divided by 60 minutes this is 688.5846387 rpm. Take that x. 4.88 x.73 and you get 2453 RPM at the engine. So I am fairly certian that it is a 4.88
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Hmmmmm, now i'm dizzy.
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2006 Jeep Unlimited IMPACT ORANGE
1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig 
1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! 
1979 Ford F150 4x4 SWB Built Ford Tough!!! 
1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!!
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